It's no secret that in today's world, big companies like Google, Facebook, and even Amazon control the Internet.
Can you elaborate? As I know, the Internet network is still largely decentralized, and thanks to tools like encryption, ToR, VPN, proxies it's impossible to control users. It's impossible to make a "turn Bitcoin off" button, so I wouldn't worry about it. There are problems with lack of competition between Internet service providers in some places, but it doesn't have any strong implications for Bitcoin.
I have to say I don't understand what is exactly the point.
You've said that big companies like Facebook and Google control internet. Maybe that is partialy true but I wouldn't say that they control internet but users of the internet, or better to say their data.
On the other hand I don't see how this is connected with Bitcoin. When we say that is decentralized that means that it doesn't have some central authority like central banks or similar who would control it or define it so that doesn't have anything to do with internet
I think he just mixed the meanings of decentralization and possible control of internet users by ISPs and big companies like Google or Facebook but I don't think he can prove the point about connection with Bitcoin.